A single phase SEPIC AC-DC converter with improved power factor and input current THD
Publisher© 2016 IEEE
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A new topology of single-phase SEPIC (Single Ended Primary Inductor Converter) AC-DC converter with low input current THD and high input power factor is proposed. Instead of using a single phase rectifier followed by a boost DCDC converter, or using a bridge rectifier with two diodes and two switches, the rectifier's input is chopped at high frequency during positive and negative cycles by a single bi-directional switch to get step-up/step-down AC-DC conversion. Total Harmonic Distortion (THD) of the input current of the proposed circuit with small input current filter is low. Input power factor and the efficiency of conversion of the circuit are high. No additional control is required to achieve the advantages.
KeywordsAc-dc converter; Efficiency; Power factor correction; Sepic converter; Total harmonic distortion
DescriptionThis conference paper was published in the International Conference on Electrical and Computer Engineering, ICECE 2016; ECE Building, Bangladesh University of Engineering and TechnologyDhaka; Bangladesh; 20 December 2016 through 22 December 2016 [© 2016 IEEE] and the definite version is available at : http://doi.org/10.1109/ICECE.2016.7853934 The Journal's website is at: https://ieeexplore.ieee.org/document/7853934/
DepartmentDepartment of Electrical and Electronic Engineering, BRAC University
- Conference Paper